CN213123284U - 一种用于隧道施工时多功能气体监测报警装置 - Google Patents
一种用于隧道施工时多功能气体监测报警装置 Download PDFInfo
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Address after: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee after: Beiwang Group Co.,Ltd. Address before: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee before: BEI WANG CONSTRUCTION GROUP CO.,LTD. |
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Effective date of registration: 20220223 Address after: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee after: Beiwang Group Co.,Ltd. Patentee after: Beiwang road and Bridge Construction Co.,Ltd. Address before: No.28, Development Zone Road, economic development zone, Fengning Manchu Autonomous County, Chengde City, Hebei Province 068350 Patentee before: Beiwang Group Co.,Ltd. |